Air Tank Size for OBA

[ElPolloBlanco]

I didn't know where to put this, 80 or Expedition. I figured it's not vehicle specific so here it is. I'm planning on finally putting my York OBA together when I get back from my up coming work trip. I've pretty much got it all planned out axcept for the air tank. What's a good size? I was thinking a 2 gallon would be ok but after further research i'm leaning towards a 5 gallon. I'd be putting it in the open space behind the rear axle where the spare tire used to go. I'm worried though that a 5 gallon tank would be too large and han down too low. So what do you guys think? Is 2 gallons enough for airing up tires or would you go with a 5 gallon?

 

[spressomon]

For filling ~35"+ tires its not really going to matter for mobile applications. 1cubic foot = ~ 6.5 gallons. York pumps 10cfm so you can see how big a tank you'd need to effectively make a difference for filling tires.

But for air tools then the tank can make a difference: More air storage = mobetta.

 

[ElPolloBlanco]

Mobetta aye. I hear that Volvo semi's used a double tank set up that would fit nicely in that area. Maybe I could find one at a junk yard someplace.

 

[Awl_TEQ]

I went to a local truck (semi) wreckers and the guy pointed me to a pile of tanks prolly 40' square and 15' tall. Long/short/skinny/fat.... all kinds. most with brackets and hose fittings still attached.

 

[spressomon]

Mobetta aye. I hear that Volvo semi's used a double tank set up that would fit nicely in that area. Maybe I could find one at a junk yard someplace.

You can also link smaller tanks together...the compressor will just "see" the total storage amount of the coupled tanks. George at Extreme Outback Air had 1-gallon long skinny tanks available...

With an aux tank taking up all the rear area on my LC I only had room for a couple 1-2 gallon tanks behind each rocker (protected by the slider). I also built my sliders with the intention of using them as air storage too...just never ran the connections (yet).

 

[ElPolloBlanco]

You can also link smaller tanks together...the compressor will just "see" the total storage amount of the coupled tanks. George at Extreme Outback Air had 1-gallon long skinny tanks available...

With an aux tank taking up all the rear area on my LC I only had room for a couple 1-2 gallon tanks behind each rocker (protected by the slider). I also built my sliders with the intention of using them as air storage too...just never ran the connections (yet).

I was thinking about doing something like this with my rear bumper I plan to build. It would be about 1.5-1.9 gallons if I did the math right

Fat-fingered on my iPhone using IH8MUD

 

[haryv]

if you do with bumper make sure

put two large holes in it, then take two much thinner circles of metal and weld them in place under neath the bumper. They will blow out first in the event of a rear end collision.

if you can consider in betwen the frame rails, that would also work but the tank would be long and skinny.

 

[ElPolloBlanco]

put two large holes in it, then take two much thinner circles of metal and weld them in place under neath the bumper. They will blow out first in the event of a rear end collision.

if you can consider in betwen the frame rails, that would also work but the tank would be long and skinny.

I'm not sure I would drive on the highway with it charged. Unless I got a train horn or something.

Fat-fingered on my iPhone using IH8MUD

 

[Rubiconcruiser]

Good idea Harry V, with the collission gaskets, but remember they are not DOT (big brother) approved and may cause a ruckus if they are leaking in the event of a collision You may get hazmat on scene. They dont ask questions just cost ya money. A popoff valve is a better solution. it will go at any increased pressure gradient.

 

[Wheelingnoob]

I have a 2.5 gallon tank in the back on my LX (spare area) hooked up to my York. When I am filling tires the York runs non stop but with air tools I can get a few blasts in before the York comes on. I have a 90/110psi switch and the system has worked great for over a year. I can fill my 35's from 15psi to 35psi in just under a min.